Pharmacologic Class:

Noncardioselective beta-blocker/alpha-1 blocker.

Interactions:

Caution with verapamil. Potentiates hypotension with nitroglycerin. May block epinephrine, β-agonist bronchodilators. Adjust antidiabetic medication. Potentiated by cimetidine. Tremor with tricyclic antidepressants. Synergism with halothane; do not use high concentrations.